- Gastroesophageal reflux and treatments
- Esophageal and GI Pathology
- Bariatric Surgery and Outcomes
- Eosinophilic Esophagitis
- Gallbladder and Bile Duct Disorders
- Esophageal Cancer Research and Treatment
- Helicobacter pylori-related gastroenterology studies
- Gastric Cancer Management and Outcomes
- Pediatric Hepatobiliary Diseases and Treatments
- Biliary and Gastrointestinal Fistulas
- Diet and metabolism studies
- Body Contouring and Surgery
- Dysphagia Assessment and Management
- Nutrition and Health in Aging
- Gastrointestinal disorders and treatments
- Liver Disease Diagnosis and Treatment
- Metastasis and carcinoma case studies
- Cholangiocarcinoma and Gallbladder Cancer Studies
- Gastrointestinal motility and disorders
- Pancreatitis Pathology and Treatment
- Cardiovascular Function and Risk Factors
- Obesity and Health Practices
- Pancreatic and Hepatic Oncology Research
- Genetic factors in colorectal cancer
- Diet, Metabolism, and Disease
University of Chile
2016-2025
Hospital Clínico de la Universidad de Chile
2016-2025
University of Colorado Denver
2009-2012
Unité de Nutrition Humaine
2012
St. George's University
2007-2011
Borsod-Abaúj-Zemplén Megyei Kórház és Egyetemi Oktató Kórház
2007
Hospital San Juan de Dios
1997
Instituto de Salud Pública de Chile
1983
Aarhus Municipality
1978-1982
Instituto de Gastroenterología
1972-1981
Oxidative stress is implicated in the pathogenesis of non-alcoholic fatty liver disease (NAFLD). In present study, hepatic and plasma oxidative stress-related parameters were measured correlated with clinical histological findings 31 NAFLD patients showing increased body mass index. Liver protein carbonyl content was enhanced by 403% steatosis (n=15) compared control values (n=12), whereas glutathione content, superoxide dismutase (SOD) activity ferric reducing ability (FRAP) decreased 57%,...
Late results in 81 patients with achalasia treated a prospective randomised study comparing forceful pneumatic dilatation the Mosher bag and surgical anterior oesophagomyotomy by abdominal route, are reported. There were no deaths from either of treatments. Two (5.6%) had perforation oesophagus after excluded late follow up. In having surgery at radiological evaluation there was gullet diameter significantly increased oesophagogastric junction decreased middle third oesophagus. One patient...
A new classification of patients with Mirizzi syndrome and cholecystobiliary fistula is presented. Type I lesions are those external compression the common bile duct. In type II a present erosion less than one-third circumference III involves up to two-thirds duct in IV there complete destruction total 219 were identified these from 17,395 benign biliary tract diseases undergoing surgery. The incidence was 11 per cent, 41 44 cent 4 cent. majority had obstructive jaundice. lesions,...
Laparoscopic esophagomyotomy is the preferred approach to patients with achalasia of esophagus, However, there are very few long-term follow-up studies (>10 years) in these patients.To perform a late subjective and objective group 67 submitted plus partial antireflux surgery (Dor's technique).In prospective study that lasted 30 years, were divided into 3 groups: I followed for 80 119 months (15 patients); II, 120 239 (35 III, more than 240 (17 patients). They clinical questionnaire,...
<h3>Objectives:</h3> To determine the simultaneous prevalence of bacteria in bile from gallbladder and common duct to influence number stones present on bateriologic findings. <h3>Methods:</h3> A prospective study was performed 467 subjects divided into seven groups: 42 control with normal biliary tracts, 221 patients symptomatic gallstone disease, 12 hydropic gallbladder, 52 acute cholecystitis, 67 without cholangitis, 49 24 previous cholecystectomy stones. In all except controls, samples...
In this study the location of lower oesophageal sphincter measured by manometry and squamous columnar junction endoscopy were determined in 109 healthy controls 778 patients with different degrees endoscopic oesophagitis. No significant differences prevalence severity heartburn regurgitation observed when oesophagitis compared but dysphagia was more common severe complicated Barrett9s oesophagus (p < 0.001). This group also showed a male predominance older age other groups. The total...